Last Friday, March 1, Microsoft released a patch with the KB4482887 index for Windows 10 (1809) and Windows Server 2019 operating systems. By and large, it contained minor edits and probably would have gone unnoticed in a series of other similar updates, if it had not started to cause performance issues in some games.
At first, ordinary OS users raised a wave of discussions on the Web, and then Microsoft itself confirmed the existence of the problem. As stated in the patch description: “After installing KB4482887, users may notice a drop in graphics performance and mouse responsiveness in certain games (for example, Destiny 2).”
At the moment, Microsoft programmers are working to resolve the difficulties. The full list of "affected" games remains unknown, although, for example, in addition to Destiny 2, Call of Duty 4: Modern Warfare and Call of Duty: Modern Warfare 2 are mentioned.
Finally, we note that experts link the performance drop with the Retpoline mechanism – protection against Specter version 2 vulnerability (CVE-2017-5715), developed by Google and implemented just in patch KB4482887.